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AK4372
低能耗24位DAC配有耳机放大器、混音器、线路输出及PLL
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The AK4372 is a 24-bit DAC with an integrated PLL and headphone amplifier. The PLL input frequency is synchronized to typical mobile phone clock frequencies. The AK4372 features an analog mixing circuit that allows easy interfacing in mobile phone and portable communication designs. The integrated headphone amplifier features "pop-noise free" power-on/off, a mute control, and it delivers 40mW of power into 16 . The AK4372 is packaged in a 24-pin CSP (2.5mm 2.5mm) package, ideal for portable applications. |
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- Applications: Mobile Phones, Smart Phones and Portable Music Players
- Multi-bitΔΣ DAC
- Sampling Rate
- 8kHz ~ 48kHz
- On chip perfect filtering 8 times FIR interpolator
- Passband: 20kHz
- Passband Ripple: ± 0.02dB
- Stopband Attenuation: 54dB
- Digital De-emphasis Filter: 32kHz, 44.1kHz and 48kHz
- System Clock
- PLL Mode (MCKI): 27MHz, 26MHz, 19.8MHz, 19.68MHz, 19.2MHz, 15.36MHz, 14.4MHz, 13MHz, 12MHz and 11.2896MHz
- PLL Mode (BICK or LRCK): 64fs, 32fs or fs
- EXT Mode: 256fs/384fs/512fs/768fs/1024fs
- Input Level: AC Couple Input Available
- Audio I/F Format: MSB First, 2's Complement
- I2S, 24bit MSB justified, 24bit/20bit/16bit LSB justified
- Master/Slave Mode
- Digital Mixing: LR, LL, RR, (L+R)/2
- Bass Boost Function
- Digital ATT
- Analog Mixing Circuit: 3 Inputs (Single-ended or Full-differential)
- Stereo Lineout
- S/N: 90dB@3.3V
- Output Volume: +6 to -24dB (or 0 to -30dB), 2dB step
- Headphone Amplifier
- Output Power: 40mW x 2ch @16Ω , 3.3V
- S/N: 92dB@3.3V
- Pop Noise Free at Power-ON/OFF and Mute
- Output Volume: 0 ~ -63dB & +12/+6/0 dB Gain
 1.5dB step (0 ~ -30dB), 3dB step (-30 ~ -63dB)
- μP Interface: 3-wire/I2C
- Power Supply: 1.6V ~ 3.6V
- Power Supply Current: 3.8mA @1.8V (6.8mW, DAC+HP, No output)
- Temperature Range
-30 to +85 ° C (AK4372ECB)
-40 to +85 ° C (AK4372VCB)
- Small Package: 24pin CSP (2.5mm x 2.5mm, 0.4mm pitch)
- Register Compatible with AK4370/1
- Evaluation Board: AKD4372
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AK4372 BLOCK DIAGRAM
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Download Datasheet
AK4372
December 2008
Download BoardManual
AKD4372
August 2007
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